[HarfBuzz] Complex NAA ligatures in Tai Tham

[Theppitak Karoonboonyanan]

On Thu, Apr 11, 2013 at 11:21 PM, Behdad Esfahbod <behdad at behdad.org> wrote:
> On 13-04-10 07:45 AM, Theppitak Karoonboonyanan wrote:
>> But it will fail if there is a leading vowel before vowel AA, like in
>> <HIGH PA, NA, SAKOT, HIGH THA, vowel E, vowel AA>.
>
> What do you expect HarfBuzz to do?

<HIGH PA, NA, SAKOT, HIGH THA, vowel E, vowel AA> should be reordered to
<HIGH PA, vowel E, NA, SAKOT, HIGH THA, vowel AA> before GSUB is applied.

> Are you correctly using mark skipping?

The rule does not need mark skipping. You can see the first case of
<WA, NA, SAKOT, LOW TA, vowel AA> already works.

> What feature are you using?

'ccmp' for script 'lana'.

Regards,
--
Theppitak Karoonboonyanan
http://linux.thai.net/~thep/